John gbunwald and manuel gbunwald



(No Model'.)

J. 85M. GRUNWALD. ROCKING CHAIR.

Patented'May-IB, 1886.

UNITED STATES PATENT OFFICE..

JOHN GRNVVALD AND MANUEL GRNWALD, OF NEW YORK, N. Y.

ROCKING-CHAIR.

SPECIFICATION forming part of Letters Patent No. 342,296, dated May 18,1886.

Application filed January 2S, 1886. Serial No. 190.092. (No model.)

` To aZZ whom it may concern:

Be it known that we, J oHN GRNWALD and MANUEL GRNWALD, citizens of theUnited States, residing at New York, in the county and State of NewYork, have invented new and useful Improvements in Rocking-Chairs, ofwhich the following is a specification.

This invention has for its object to provide a novel and etticientspring rocking chair; and it consists in the construction of deviceshereinafter described and claimed, reference being made to theaccompanying drawings, illustrating our invention, in which- Figure 1 isa central vertical section of the Fig. 2 is a horizontal section in theplane a: x, Fig. l.

Similar letters indicate corresponding parts.

In the drawings, the letter A designates the seat, to which the back Band arms C may be secured in the usual manner. D are the rockers. Allthe above parts may be of common construction. Between the seat and therockers are secured zigzag springs, consisting of a series ofspring-rods, a, firmly fastened to each other at alternate extreme ends.A series of these zigzag spring-rcds are placed between each rocker andeach side ofthe Chairseat. The upper rod of each series is attachedat'one end to the side edge of the seat, and the lower rod is attachedat one end to the rocker. The width of the rods comprising the springsis the saine, or approximately the same, as the width of the rockers,and where two series of springs of this character are arranged asdescribed it is necessary that they be braced and steadied againstlateral or sidewise movement or displacement. To accomplish this, Iconnect the front and rear ends oftwo or more ofthe rods comprising thesprings through the medium of transverse bars b b, which extend,respectively, from the front and rear ends of two or more of thespringrods at one side of the chair to the front and rear ends ofthecorresponding springrods at the opposite side of the chair.` By thismeans both series of springs are rigidly held in vertical line atdifferent points between the seat and the rockers, which is veryimportant in bracing and steadying the two sets of springs againstlateral or sidewise movement or displacement.

We are aware that zigzag springs have heretofore been constructed, andsuch, therefore, We do not broadly clain Vhat we claim as new, anddesire to secure by Letters Patent, is-

A spring rocking chair consisting of the following elements, to wit; therockeis, the seat, the tWo sets of zigzag spring-rods having their upperrods secured at one end, respectively, to the side edges of the seat,and their lower rods secured at one end to the rockers, and thetransverse bars rigidly connecting together the front and rear ends oftwo of the spring-rods of each set, for bracing and steadyin g theopposite sets of spring rods against lateral or sidewise movement,substantially as described.

In testimony whereof We have hereunto set our hands and seals in thepresence of two subscribing witnesses.

JOHN GRUNWALD. [L s] MANUEL GRUNWALD. [1.. s] Witnesses:

OTTO HUFELAND, A. FABER DU FAUR, Jr.

